Yearly Roth Conversion Analysis. This window matters most for people retiring at 65, when an 8-year gap exists before required minimum distributions begin at 73. It is also especially valuable for retirees with a paid-off home, since their baseline expenses are already lower and their taxable income in those early years tends to be as well.
Show you which assets to sell to minimize tax liability. I.e., taking distributions from IRAs or personal accounts, etc. This timing matters most in the years before Social Security begins, particularly for someone retiring with $500,000 as their primary asset.
Coordinate IRA required minimum distributions and federal and/or state tax withholding.